Calendar Server WCAP Attendee Overview

Each attendee entry can contain several sub-parameters, such as invitation
participation status, whether attendance is required or not, whether the attendee
is a group or not, and so forth. All such parameters are encapsulated in a
syntax very similar to the ATTENDEE property defined in
the iCalendar Specification (RFC 2445). Reading the entire document is recommended
in order to have the necessary background information to understand the WCAP
attendee syntax. Some differences exist, such as, WCAP uses a different delimiter, ^, to set apart these parameters. (However, WCAP uses the standard
iCalendar semicolon delimiter for separating attendees.)